The promoter of the araBAD operon from E. coli is activated in the presence of arabinose and the absence of glucose and directs expression of genes encoding enzymes required for arabinose metabolism. 

Unlike the cases of lac and gal genes, where a repressor and an activator work together, here two activators work together: AraC and CAP. 

TLS Online TPP Program

#Id: 6548

#Unit 7. System Physiology – Animal

Fusion of GSVs with the plasma membrane catalyzed by the exocyst & monomeric GTP-binding protein, RALA

TLS Online TPP Program

#Id: 6549

#Unit 7. System Physiology – Animal

Plasma membrane GLUT4 allows the cell to incorporate glucose from the ECF

TLS Online TPP Program

#Id: 6550

#Unit 7. System Physiology – Animal

Removal of insulin, the plasma membrane GLUT4 is internalized by endocytosis and eventually transported to GSVs

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#Id: 6551

#Unit 7. System Physiology – Animal

The most potent stimulator of insulin Arginine and Lysine

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#Id: 6552

#Unit 7. System Physiology – Animal

TLS Online TPP Program

#Id: 6553

#Unit 7. System Physiology – Animal